Home / 644,821.40-968,009.70-360,738.20

Finding the Fourth Proportional to 644,821.40, 968,009.70 and 360,738.20

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Solution

The fourth proportional to 644,821.40, 968,009.70 and 360,738.20 is: 541,542.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,821.40 : 968,009.70 = 360,738.20 : x
  2. Step 2: Convert to fraction form
    644,821.40/968,009.70 = 360,738.20/x
  3. Step 3: Cross multiply
    644,821.40x = 968,009.70 × 360,738.20
  4. Step 4: Simplify right side
    644,821.40x = 349,198,076,760.54
  5. Step 5: Solve for x
    x = 349,198,076,760.54/644,821.40
  6. Step 6: Final answer
    x = 541,542.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.